Chemical fire-extinguisher.



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UNITED 'STATES RICHARD r. Binnen Aun CARLTON e .Meeuwen or ADAMS, NEWYORK.

Parnu ernten CHEMICAL FlFEHEXTINGUISHER.

No. 840,482. l

Y Specification of Letters Patent.

Patented Jan'. e, 19o?.

Application led Angust'l, 1.906. Serial No. 823.711.

To all whomitt may concern:

Be it known ,that we, IiroHARD F. BARK-ER and CARL'roNG. MoOUMBEn, citizens of the United States, residing at Adams, in the county of Jefferson and State of New York, have invented or discovered certain new and useful Improvements in Chemical Fireix tinguishers, of which the following is a specification, reference being had therein to-the accompanying drawings. l f

's' invention 'relates' to that class of chemical fire-extinguishers in which the force required for expelling an extinguishing solution from the vessel containing the same is develo ed by mixin an acid with an alkaline so ution within't e vessel and the inven- Ationhas for its object to provide an extinguisher of this class which may be automatic in its action and which is also adapted to be reversed manually for the urpose of developing the ex elling gas wit the vessel, so

A, as to be usab e as a hand-extinguisher.

In the accompanying drawings, Figure 1 is a vertical section, with parts in elevation, of an apparatus embodymg the invention. Fig. 2 ls'a detail plan view of the cap of the extinguisherwith the parts mounted thereon. Fig. 3 is a detail view of the cage for holding the acid-bottle. Fig.4 is a detail view showing the up er valve which will open by gravit when the extinguisher is reversed manu- Referringto the drawings, 12 denotes the body or vessel of the extinguisher, which' may be of any suitable form ,or size and which will preferably be of sheet metal. Into the top of this vessel is screwed or otherwise removably secured a cap) 13, in which is fixed an eduetion pipe or tu e 14, provided at its lower end Vwith a gravity-valve 15, which willbe normally open, but which will close by gravity when the vessel is reversed, the up er outer end of the said tube being adapte for attachment thereto of any suit- Also fixed to the cap 13. is a shorter eduction pipe or tube 16, to the' up er end of which may be attached a suita le hose or spraying device, the ortion of said tube within the vessel being bent in U shape with the upper end of its shorter limb provided with a gravity-valve 17, which will be normally closed, but which will o en by gravity when thc vessel is reverse or turned upsidedoavn.

Suitably suspended irourthe ca 13 is a cage 18, adapteditoy contain the aci -holding bottle 19, said cage being provided with suitable pivots or trunnions 20, by means of which it may be pivotally supported on the pipe or tube 14 and on'the rod or bar 21, depending from the pipe or tube' 1.6, so that said cage is ada .ted to be reversed, asNindicated by dotted Aines in Fig. 1. The cage 18 is' pivotally sus ended in such a manner, preferably slightly ofi its center, that it will. ave a tendency to turn over to the position shown by dotted lines in Fig. 1, exceptin when restrained from doing so, and. the sai cage is normally retained in the position shown in full lines in Fig. 1 by a suitable retaining device", chain 22, detaehably connected at its lower end' with the said cage, as by being hooked to the top of the cage in any suitable manner.

The upper end of said chain is embedded 'in a suitab e plug or body 23, consisting of a composition having a low fusing-point and inserted in a holder or Casin 24, screwed into the 'ap 13 and referab y provided with wings 25, by whic i it may be readily turned in screwing or unscrewing. Thetop of this holder or casing is preferably of a suitable heat-conducting metal, so that if a lire accidentally fusible plug or material 23 within the u end of said holder or casing, thereby re easing the chain 22 and permitting the cage to turn over, so as to mix the acid held in the bottle 19 with the alkaline solution in the vessel 12 to develop the gasnecessary to expel the extinguishing Huid from the vessel through the tube or pipe 14. lf, however, it

per

be desired to develop expelling-gas ,within suitable hose attached lto outer end of said tube. y

'lo provide for the ready insertion or removal of the acid-bottle 19 into or from the cage 18, the top ol' the latter is preferably hinged or pivoted at 26 to aring 27, the said hinged top portieri comprising a ring 28,

which is preferably slightly less in diameter, to Aht against the topv than the ring 27, so as preferably consisting of a occurs the heat thereof will melt the shoulder of the acid-bottle 19.' The hinged top is held. closed by a suitable sprin -catch, as 30. The stopper 29 lor the acit-bottle,

which is intended to i it loosely in the neck or f mouth of the latter, is preferably attached to the top of thc cage, and. owingr to the loose 'lit of the said stopper in the neck or mouth of the bottle said stopper will partllyT tall out of said neel( or mouth when the bottle is reversed, so as to permit the acid. to run out slowly, and thus suitably lniX with the allialine solution in the vessel.

From the lirogoing it will be understood that the invention con'iprises a chemical Ylireextinguisher which. may be aut i niatic in its action by reason ot the melting?r oi the fusible plug, but which is also adapted to be used manually or as a hand-extinguisher by reversing, as is common in the operation of extinguishers oi this kind..

Having .thus described our invention, we ciairn and desire to secure by Letters Patentl l. A chemical fire-extinguisher comprising the combination with a suitable vessel, of means for reversibly supporting an acidbottle within the saine, Lnd two cduction pipes or tubes extending within the vessel and provided. with reversely-acting gravityvalves, so that the extinguisher is adapted for either automatic or manual operation.

A chemical {ire-extinguisher comprising the 'combination with a-suitable vessel, the means for reversibly supporting an acidbottle within. the same, a fusible plug connected with. the :wid-bottle support in. such a manner as normally to retain it in an upright position, and which acid-bottle support is adapted to turn over or reverse itself' when the said fusible plug is melted,` two eduction tubes or ipes extendin@r within the said vessel anc? provided with reversely-acting gravity-valves, so that the extinguisher is adapted for either automatic or manual operation.

3. A chemical fire-extinguisher comprising the combination with the vessel 12, of the cap 13 removably secured in the mouth thereof, two eduction tubes or pipes mounted in said cap and provided Wi th reverseiv-acting gravity-valves, a pivoted and reversible bottlesupport suspended from said cap within said vessel 1,' and a fusible plug mounted on said cap and with which said bottle-support is connected.

' 4. A chemical fire-extinguisher provided interiorly with a bottle-supporting cage having a hinged top,'combined with an acidbottle within said cage and a stopper for said `acid-bottle attached to said hinged top so as to loosely 'lit in the neck'ormouth of said bottle.

5. A chemical tire-.extinguisher provided interiorly with a bottle-support-ing cage* having a hinged top, combined with a cap from which said cage, is suspended and with which cap said cage has a fusible connection, an acid-bottle within said cage, and a stopper for said acid-bottle attached to said hinged top so as to loosely iit in the Aneck or mouth of said bottle.

In testimony whereof We affix our signatures in presence of two Witnesses.

. RICHARD F. BAKKER.

CARLTON G. MCCUMBER. Witnesses:

A. A. DUNHAM, C. G. ALBIN. 

